In the Cabin Altitude or Emergency Descent Procedure, which actions are included?

• A. Oxygen Masks - Don and 100%; Crew Communication - Establish
• B. Oxygen Masks - Don and 100%; Captain assumes PF duties
• C. Captain assumes PF duties
• D. Oxygen Masks - Don and 100%; Crew Communication - Establish; Captain assumes PF duties

Answer: (D)

During a Cabin Altitude or Emergency Descent Procedure, the priorities are to get everyone on oxygen, maintain clear coordination, and have a defined leader in command of the flight controls. Donning oxygen masks and ensuring 100% oxygen keeps pilots and crew conscious and able to respond quickly as the aircraft descends. Establishing crew communication is essential so everyone knows the plan, altitude targets, descent rate, and who is handling each task, reducing confusion under high workload. Having the captain assume the pilot‑flying duties provides decisive leadership and ensures the descent is managed smoothly, with a clear person in charge of keeping the aircraft on the correct profile and reacting to any unexpected issues. If any one of these elements is missing, coordination can break down or control can become ambiguous, which isn’t safe in an emergency descent.